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Caption:SCOTTSDALE, AZ - SEPTEMBER 5: Dr. Ben Carson speaks as the keynote speaker at the Wake Up America gala Event September 5, 2014 at the Westin Kierland Resort in Scottsdale, Arizona. Carson is a retired neurosurgeon who would run in the 2016 Presidential campaign as a conservative for the Tea Party. (Photo by Laura Segall/Getty Images)
Caption:SCOTTSDALE, AZ - SEPTEMBER 5: Dr. Ben Carson speaks as the keynote speaker at the Wake Up America gala Event September 5, 2014 at the Westin Kierland Resort in Scottsdale, Arizona. Carson is a retired neurosurgeon who would run in the 2016 Presidential campaign as a conservative for the Tea Party. (Photo by Laura Segall/Getty Images)

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Carson on Iran: Representatives need to be involved

Potential GOP presidential contender Dr. Ben Carson weighs in on negotiating with Iran. See part three of four part interview.

Carson on Iran: Representatives need to be involved

Potential GOP presidential contender Dr. Ben Carson weighs in on negotiating with Iran. See part three of four part interview.